Classes like the artificer can prepare a new spell list in 1 minute, can an artificer cast a long-duration spell such as false life (1 hour), and immediately prepare a new spell list while retaining false life's effects?

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    \$\begingroup\$ Does this answer your question? Can you cast a spell just before the end of a long rest? \$\endgroup\$
    – Someone_Evil
    Apr 28, 2020 at 10:43
  • \$\begingroup\$ @Someone_Evil I don't think it's a duplicate. The other question is rather cheesy and I'm 95% sure my DM wouldn't allow it. This, on the other hand, is a valid use of a class feature imho (provided it works, I haven't combed through the rules). \$\endgroup\$ Apr 28, 2020 at 10:47
  • \$\begingroup\$ @Someone_Evil not really, resting and preparing spells are different mechanics with different constraints. Though thanks for the suggestion nontheless. \$\endgroup\$ Apr 28, 2020 at 10:50

1 Answer 1


An Artificer cannot change their prepared spell list in 1 minute

Artificers prepare their spell list as follows:

You can change your list of prepared spells when you finish a long rest.

A long rest takes eight hours, (four if you're an elf).

During that long rest, in order to change your spell list you must spend time:

tinkering with your spellcasting focuses: at least 1 minute per spell level for each spell on your list.

However, these changes won't be in effect until you 'finish a long rest'.

That said, you can indeed 'cast a long-duration spell [..] and then immediately prepare a new spell list while retaining [its] effects'.

Unfortunately false life wouldn't work that well for this - as its duration is only an hour long, much shorter than the length of a long rest - but something like water breathing (duration 24 hours) would.

  • \$\begingroup\$ thanks for the answer, I don't know how I missed the long rest part \$\endgroup\$ Apr 28, 2020 at 11:30

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